622009 has 2 divisors, whose sum is σ = 622010. Its totient is φ = 622008.

The previous prime is 621997. The next prime is 622019. The reversal of 622009 is 900226.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 570025 + 51984 = 755^2 + 228^2 .

It is a cyclic number.

It is not a de Polignac number, because 622009 - 2¹³ = 613817 is a prime.

622009 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (622019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311004 + 311005.

It is an arithmetic number, because the mean of its divisors is an integer number (311005).

2⁶²²⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

622009 is a deficient number, since it is larger than the sum of its proper divisors (1).

622009 is an equidigital number, since it uses as much as digits as its factorization.

622009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 622009 is about 788.6754719148. The cubic root of 622009 is about 85.3621915064.

The spelling of 622009 in words is "six hundred twenty-two thousand, nine".